139952122 has 4 divisors (see below), whose sum is σ = 209928186. Its totient is φ = 69976060.

The previous prime is 139952101. The next prime is 139952129. The reversal of 139952122 is 221259931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123232201 + 16719921 = 11101^2 + 4089^2 .

It is not an unprimeable number, because it can be changed into a prime (139952129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34988029 + ... + 34988032.

Almost surely, 2^139952122 is an apocalyptic number.

139952122 is a deficient number, since it is larger than the sum of its proper divisors (69976064).

139952122 is an equidigital number, since it uses as much as digits as its factorization.

139952122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69976063.

The product of its digits is 9720, while the sum is 34.

The square root of 139952122 is about 11830.1361784216. The cubic root of 139952122 is about 519.1902114761.

The spelling of 139952122 in words is "one hundred thirty-nine million, nine hundred fifty-two thousand, one hundred twenty-two".